Pacer Chemistry

In March 2000, there was a thread of messages on the AMC Pacer list about chemical compounds
whose symbols spell out the word "Pacer", and it was just too much fun to not include
as a Pacer Page feature!

First, Jesse posted:

"On a recent chemistry test, the extra credit question was to make a word
combining elements, so I took it upon myself to make it say 'Pacer'. SUCCESS! I
have no idea what to call my new covalent compound, but I'd like someone to
come up with the actual name for it (e.g. carobon monoxide, not carbon oxygen).
Phosphorous Actinium Erbium
PAcEr
"See?"

Then Leon Doneski, chemistry student at the University of
Delaware, made a slight correction:

"The chemical nomenclature for the 'compound' that spells the word
'PAcEr' would be phosphorous actinium erbiumide. Since the charge on P is
-3, and Ac and Er are each +3, this mythical compound would technically be
written as P2AcEr."

Leon later added:

"Realize that I'm an analytical chemist, and inorganic is not my
specialty...to continue the thread Jesse started, there's another mythical
'chemical compound' that spells Pacer:
Pa C Er : protactinium carbon erbium
"Of course, if someone could synthesize this, it would have the
formula (Pa)7 (CEr)5."